DMT Double Sided Diafold Sharpener E/F Hardcoat Surface is a two stage sharpening system with compact convenience. One of DMT￢ﾀﾙs signature products now outfitted with the proprietary Hardcoat surface for extra durability when used to sharpen ceramic blades. While all DMT diamond sharpeners can sharpen hard steels and ceramics, the HC surface provides for extra long life when used for ceramic blade sharpening. Two different grits combined to create a lightweight sharpener that is great for home, camper, tool box, gardening shed and more. Includes a continuous surface that can be used for small or pointed edges. HC Extra-Fine diamond (9 micron / 1200 mesh) to polish and refine a razor edge after sharpening with a coarser diamond. HC Fine diamond (25 micron / 600 mesh) for a razor sharp edge. Convenient size: 9 1/2" open. 5" closed. Folding plastic handles protect sharpener when not in use. Sharpens in a fraction of the time required by conventional stones.